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Additional
Hartnup disease
English Wikipedia - The Free Encyclopedia
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Hartnup disease
Hartnup disease
(also known as "
pellagra
-like
dermatosis
" and "Hartnup disorder") is an
autosomal
recessive
metabolic disorder
affecting the absorption of nonpolar
amino acids
(particularly
tryptophan
that can be, in turn, converted into
serotonin
,
melatonin
, and
niacin
). Niacin is a precursor to
nicotinamide
, a necessary component of
NAD+
.
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